/*
 * Copyright (c) 2012 Robert Burrell Donkin robertburrelldonkin.name
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
 * and associated documentation files (the "Software"), to deal in the Software without restriction, 
 * including without limitation the rights to use, copy, modify, merge, publish, distribute, 
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software 
 * is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or 
 * substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 */
package sekhmet.base;


public abstract class AbstractRunner implements Runnable {

	protected volatile boolean isStopping;

	protected abstract void work();
	
	protected abstract void prepare() throws Exception;

	protected abstract void posthumous();
	
	protected volatile boolean isRunning;

	public AbstractRunner() {
		super();
	}

	public void run() {
		if (!isRunning) {
			try {
				isStopping = false;
				isRunning = true;
				prepare();
				while (!isStopping) {
					work();
				}
				posthumous();
			} catch (Throwable t) {
				t.printStackTrace();
			} finally {
				isStopping = false;
				isRunning = false;
			}
		}
	}


	public void stop() {
		isStopping = true;
	}

	public boolean isRunning() {
		return isRunning;
	}

}